Standards compliant database content

[semtex]

I'm making a website using valid XHTML strict.
The webpages validate, except from the text content that comes out of the database. There's quite some characters in my text (such as " ’ ") that don't validate because they aren't coded with the right character entity.

I'm using php's htmlentities to parse the text that comes out of my database, but clearly a few characters don't get encoded.

How can I bypass this problem?

[semtex]

ok, solved.
i've found an interesting article that, along with the comments on it, helped me a lot:
http://www.sitepoint.com/blogs/2005/04/19/character-encodings-and-input/